(19)

(11)

EP 1 224 779 A2

(12)

(88) Date of publication A3: 16.02.2002 (43) Date of publication: 24.07.2002 Bulletin 2002/30 (21) Application number: 01965003.5 (22) Date of filing: 15.06.2001

(51) International Patent Classification (IPC)7: H04L 25/02, G06F 13/40 (86) International application number: PCT/EP0106/889 (87) International publication number: WO 0199/324 (27.12.2001 Gazette 2001/52)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR (30) Priority: 20.06.2000 EP 00202147 (71) Applicant: Koninklijke Philips Electronics N.V. 5621 BA Eindhoven (NL)	(72) Inventors: DEN BESTEN, Gerrit, W. NL-5656 AA Eindhoven (NL) KOLE, Marcus, E. NL-5656 AA Eindhoven (NL) (74) Representative: Duijvestijn, Adrianus Johannes et al Internationaal Octrooibureau B.V.,Prof. Holstlaan 6 5656 AA Eindhoven 5656 AA Eindhoven (NL)